<template>
  <transition name="drop">
    <div class="top-tip"
         v-show="showFlag"
         @click.stop="hide">
      <slot></slot>
    </div>
  </transition>
</template>

<script>
export default {
  name: 'top-tip',
  props: {
    duration: {
      type: Number,
      default: 1500
    }
  },
  data () {
    return {
      showFlag: false
    }
  },
  methods: {
    show () {
      this.showFlag = true
      clearTimeout(this.timer)
      this.timer = setTimeout(() => {
        this.hide()
      }, this.duration)
    },
    hide () {
      this.showFlag = false
    }
  }
}
</script>

<style lang="less" scoped>
@import "~common/css/variable";
.top-tip {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 500;
  background: @color-dialog-background;
  &.drop-enter-active,
  &.drop-leave-active {
    transition: all 0.3s;
  }
  &.drop-enter,
  &.drop-leave-to {
    transform: translate3d(0, -100%, 0);
  }
}
</style>
